ABB NAL Series Mounting And Operation Manual page 15

4. The shackle (connecting part with a hole) is mounted on the
extension shaft of earthing switch so that the rod connecting
the arm of auxiliary switch with shackle is slightly strained,
see Fig. 43.
5-7. Tighten the screws (M5) that mount the shackle on
extension shaft of earthing switch, see Fig. 44-46.
Fig. 43-46 Mounting the auxiliary switch for E-EB earthing switch
Fig. 43
Fig. 45
Fig. 44
Fig. 46
NAL/NALF – Mounting and operation manual 15